A080624 Consider 3 X 3 X 3 Rubik cube, but only allow the double slice group to act; sequence gives number of positions that are exactly n moves from the start.

1, 9, 51, 247, 428, 32

Offset

0,2

Comments

Not every position can be reached using this restricted set of moves. Total number of positions that can be reached = 768.

References

Mark Longridge, posting to Cube Lovers List, Apr 14 1995.

Links

Table of n, a(n) for n=0..5.

Alan Bawden, Cube Lovers Archive, Part 15

Mark Longridge, God's Algorithm Calculations for Rubik's Cube...

Crossrefs

Cf. A080601, A080614, etc.

Sequence in context: A213164 A278135 A097789 * A125319 A080621 A027218

Adjacent sequences: A080621 A080622 A080623 * A080625 A080626 A080627

Keyword

nonn,fini,full

Author

N. J. A. Sloane, Feb 26 2003

Status

approved